refactor: rm unused fn

apps/emqx/src/emqx_ctl.erl

@@ -42,8 +42,7 @@
         ]).
 
 %% Exports mainly for test cases
--export([ format/1
-        , format/2
+-export([ format/2
         , format_usage/1
         , format_usage/2
         ]).
@@ -153,10 +152,6 @@ usage(UsageList) ->
 usage(CmdParams, Desc) ->
     io:format(format_usage(CmdParams, Desc)).
 
--spec(format(io:format()) -> string()).
-format(Msg) ->
-    lists:flatten(io_lib:format("~ts", [Msg])).
-
 -spec(format(io:format(), [term()]) -> string()).
 format(Format, Args) ->
     lists:flatten(io_lib:format(Format, Args)).

apps/emqx/test/emqx_ctl_SUITE.erl

@@ -110,7 +110,7 @@ mock_print() ->
     %% proxy usage/1,2 and print/1,2 to format_xx/1,2 funcs
     catch meck:unload(emqx_ctl),
     meck:new(emqx_ctl, [non_strict, passthrough]),
-    meck:expect(emqx_ctl, print, fun(Arg) -> emqx_ctl:format(Arg) end),
+    meck:expect(emqx_ctl, print, fun(Arg) -> emqx_ctl:format(Arg, []) end),
     meck:expect(emqx_ctl, print, fun(Msg, Arg) -> emqx_ctl:format(Msg, Arg) end),
     meck:expect(emqx_ctl, usage, fun(Usages) -> emqx_ctl:format_usage(Usages) end),
     meck:expect(emqx_ctl, usage, fun(CmdParams, CmdDescr) ->

apps/emqx_gateway/test/emqx_gateway_cli_SUITE.erl

@@ -69,7 +69,7 @@ init_per_testcase(_, Conf) ->
                      fun(L) -> emqx_ctl:format_usage(L) end),
     ok = meck:expect(emqx_ctl, print,
                      fun(Fmt) ->
-                        Self ! {fmt, emqx_ctl:format(Fmt)}
+                        Self ! {fmt, emqx_ctl:format(Fmt, [])}
                      end),
     ok = meck:expect(emqx_ctl, print,
                      fun(Fmt, Args) ->